(Update) I am a guy who lived in a tree on public land for a year.
This afternoon I took my wife to go and visit my old home and take it down. When I looked at my calendar, it had really been more like over two years since I had last been up (time flies) and as I suspected the platform was pretty trashed. My wife didn't end up climbing up with me, she took one look at that ladder and said she wasn't feeling "that adventurous". The platform was funky when I last saw it and now it was totally unusable (it wasn't weatherproofed enough). The deck gave way after I walked around on it and while I was lowering it to the ground the whole thing split in half and some of it fell to the ground. There is a little more stuff to haul out but its pretty much gone now. It was a little sad, even though I hadn't been up in ages, it was nice knowing that my little retreat in the woods was still there, waiting for me to visit whenever I wanted. As many of you guessed correctly it was located on Mt Tamalpais in Marin County.
Anyway here is the album: http://imgur.com/a/8mwiw